I'm here to share details about fuel allowances and claiming mileage in QuickBooks Self-Employed (QBSE), @djeosteopathy.
QBSE uses the simplified expense method (with flat rates) to calculate the allowable business expense for your car, van, or motorcycle. With this method, you're unable to claim vehicle insurance, repairs and servicing, or fuel costs. But you can claim all other travel expenses in addition to your simplified expense amount.
To know more about this, please refer to this article: Simplified Expenses mileage method (with flat rates) versus Actual costs for vehicles.
Also, to further guide you in claiming mileage and all other travel expenses in QBSE, I'd recommend checking out these articles:
Let me know in the comments if you have other mileage concerns and questions about recording fuel allowances in QBSE. I'll gladly help. Take care, and I wish you continued success, @djeosteopathy.